Quick fix for upside down thumbnails.

Change-Id: I089c78f050fbea068b394de9205322dc62e28764

android/experimental/LibreOffice4Android/res/drawable/black_white_gradient.xml

+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <gradient
+        android:type="radial"
+        android:gradientRadius="200"
+        android:startColor="#FF000000"
+        android:endColor="#00FFFFFF"
+        android:angle="45"/>
+    <padding android:left="7dp"
+        android:top="7dp"
+        android:right="7dp"
+        android:bottom="7dp" />
+    <corners android:radius="8dp" />
+</shape>
\ No newline at end of file

android/experimental/LibreOffice4Android/res/layout/file_explorer_grid_item.xml

@@ -8,16 +8,15 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:paddingTop="10dp"
     android:orientation="vertical" >
     
 	<ImageView
         android:id="@+id/grid_item_image"
         android:layout_width="100dp"
         android:layout_height="142dp"
-        android:paddingTop="15dp"
-        android:paddingBottom="10dp"
         android:scaleType="fitStart"
-        android:layout_gravity="center" >
+        android:layout_gravity="center">
     </ImageView>
  
     <TextView
@@ -27,6 +26,7 @@
         android:text="@+id/label"
         android:paddingLeft="10dp"
         android:paddingRight="10dp"
+        android:paddingTop="10dp"
         android:layout_gravity="center"
         android:textSize="15dp" 
         android:textStyle="bold"

android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java

@@ -33,6 +33,7 @@ import org.libreoffice.R;
 
 import android.app.Activity;
 import android.graphics.Bitmap;
+import android.graphics.Matrix;
 import android.graphics.Color;
 import android.os.AsyncTask;
 import android.os.Bundle;
@@ -1110,22 +1111,21 @@ public class DocumentLoader
         // Could easily make a new (larger) thumb but recycling
         // should be faster & more efficient, better for the environment ;-)
         //ll = (LinearLayout)findViewById( R.id.navigator);
-//        Bitmap bmp = ( (ThumbnailView)ll.getChildAt( 0 ) ).getBitmap();
 
-        ByteBuffer bb = renderPage( 0 , 100 , (int)( 100*Math.sqrt(2) )  );
-//        bb.flip();
-        Bitmap bmp = Bitmap.createBitmap( 100, (int)( 100*Math.sqrt(2) ), Bitmap.Config.ARGB_8888);
-        bmp.copyPixelsFromBuffer(bb);
+        Bitmap bmpAlpha = ( (ThumbnailView)ll.getChildAt( 0 ) ).getBitmap();
+        //For now use these 3 lines to turn the bitmap right way up.
+        Matrix m = new Matrix();
+        m.preScale( 1.0f , -1.0f );
+        Bitmap bmp = Bitmap.createBitmap( bmpAlpha, 0, 0, bmpAlpha.getWidth(), bmpAlpha.getHeight(), m, true);
 
         File file = new File(extras.getString("input"));
         Log.i(TAG ,"onDestroy " + extras.getString("input"));
         File dir = file.getParentFile();
         File thumbnailFile = new File( dir , "." + file.getName().split("[.]")[0] + ".png");
         try {
-            /*(ByteArrayOutputStream bytes = new ByteArrayOutputStream();
-            bmp.compress(Bitmap.CompressFormat.JPEG, 40, bytes);
-            if( !thumbnailFile.isFile() )
-                thumbnailFile.createNewFile();
+            ByteArrayOutputStream bytes = new ByteArrayOutputStream();
+            bmp.compress(Bitmap.CompressFormat.PNG, 40, bytes);
+            thumbnailFile.createNewFile();
             FileOutputStream fo = new FileOutputStream( thumbnailFile );
             fo.write(bytes.toByteArray());*/
             if( !thumbnailFile.isFile() )

android/experimental/LibreOffice4Android/src/org/libreoffice/ui/LibreOfficeUIActivity.java

@@ -38,6 +38,7 @@ import android.app.ActionBar.OnNavigationListener;
 import android.app.Activity;
 import android.os.AsyncTask;
 import android.graphics.Bitmap;
+import android.graphics.Matrix;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
@@ -855,11 +856,15 @@ class ListItemAdapter implements ListAdapter{
                 ByteBuffer bb = renderPage( 0 , widthInPx , heightInPx);
                 Bitmap bm = Bitmap.createBitmap( widthInPx , heightInPx , Bitmap.Config.ARGB_8888);
                 bm.copyPixelsFromBuffer(bb);
+
+                Matrix m = new Matrix();
+                m.preScale( 1.0f , -1.0f );
+                Bitmap bmp = Bitmap.createBitmap( bm, 0, 0, bm.getWidth(), bm.getHeight(), m, true);
                 File dir = file.getParentFile();
                 File thumbnailFile = new File( dir , "." + file.getName().split("[.]")[0] + ".png");
                 try {
                     ByteArrayOutputStream bytes = new ByteArrayOutputStream();
-                    bm.compress(Bitmap.CompressFormat.PNG, 40, bytes);
+                    bmp.compress(Bitmap.CompressFormat.PNG, 40, bytes);
                     thumbnailFile.createNewFile();
                     FileOutputStream fo = new FileOutputStream( thumbnailFile );
                     fo.write(bytes.toByteArray());